﻿/*
 * BSD 3-Clause License
 *
 * Copyright (c) 2024, Kevin Robertson
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
using Quiddity.DNS;
using Quiddity.Support;
using System;

namespace Quiddity.MDNS
{
    class MDNSChecker : DNSChecker
    {
        public string[] Questions { get; set; }
        public string OutputQuestionDenied { get; set; }

        public MDNSChecker()
        {
            this.OutputReplyAllowed = "response sent";
            this.OutputInspect = "inspect only";
            this.OutputDisabled = "disabled";
            this.OutputHostDenied = "host ignored";
            this.OutputIPDenied = "IP ignored";
            this.OutputTypeDenied = "type ignored";
            this.OutputServiceDenied = "service ignored";
            this.OutputRepeat = "previous capture";
            this.OutputQuestionDenied = "question type ignored";
        }

        public virtual bool Check(string name, string question, string type, string clientIP)
        {

            if (!Check(name, type, clientIP))
            {
                return false;
            }
            else if (!QuestionIsAllowed(question))
            {
                this.OutputMessage = this.OutputQuestionDenied;
                return false;
            }
            
            return true;
        }

        public bool QuestionIsAllowed(string question)
        {
 
            if (!Utilities.ArrayIsNullOrEmpty(this.Questions) && !Array.Exists(this.Questions, element => element == question.ToUpper()))
            {
                return false;
            }

            return true;
        }

    }
}
